US 2014/0276844 A1 · RETRO GUIDEWIRE REAMER

Abstract

A retro guidewire reamer includes a cutting member, and a mechanism for moving the cutting member from a closed position to a deployed position in a single manual motion. Once a desired size of a bone tunnel is established, a surgeon uses the reamer to create a primary bone tunnel over a guidewire from the outside in. The surgeon retracts the guidewire, and activates the mechanism to deploy the cutting member within the bone joint to conform to the size of a tendon graft. The surgeon uses the deployed cutting member to create a counter bore through the bone in a retrograde manner. Once the counter bore is drilled, the surgeon activates the mechanism to close the cutting member, allowing the reamer to be withdrawn through the primary tunnel. The retro guidewire reamer can be used to provide more accurate bone tunnel placement during ligament reconstruction surgery.

Claims26

Dependent claims

A surgical instrument for use in creating tunnels through bone, comprising:

a first tubular shaft having a distal end and a proximal end, the first tubular shaft being configured to be disposable over a guidewire;
at least one cutting member movably disposed adjacent the distal end of the first tubular shaft;
and
a first mechanism operative to move the cutting member between a closed position and a deployed position,
wherein the cutting member is configured to be engageable with the guidewire at least while in the deployed position, thereby preventing movement of the cutting member from the deployed position during use.

2 more elements

A method of performing an arthroscopic surgical procedure, comprising:

providing a surgical instrument including a cannulated shaft disposed over a guidewire, and a cutting member movably disposed adjacent a distal end of the cannulated shaft, the cutting member being configured to move between a closed position where a central axis thereof is coincident with a longitudinal axis of the cannulated shaft, and a deployed position where the central axis of the cutting member is disposed at an angle to the longitudinal axis of the cannulated shaft;
while the cutting member is in the closed position, drilling a tunnel through bone over the guidewire in an antegrade manner;
moving the cutting member from the closed position to the deployed position;
and
while the cutting member is in the deployed position:
engaging the cutting member with the guidewire to prevent movement of the cutting member from the deployed position;
and
drilling, by the cutting member, a counter bore through the bone over the guidewire in a retrograde manner.

5 more elements

Dependencies are inferred from the claim text.

Retro guidewire reamer

Life of this patent

Retro guidewire reamer

Life of this patent

Abstract

Claims26